Scattering amplitudes in affine gravity

Affine gravity is a connection-based formulation of gravity that does not involve a metric. After a review of basic properties of affine gravity, we compute the tree-level scattering amplitude of scalar particles interacting gravitationally via the connection in a curved spacetime. We find that, while classically equivalent to general relativity, affine gravity differs from metric quantum gravity.

Automated summary

Affine gravity is a connection-based formulation of gravity that differs from metric quantum gravity and is classically equivalent to general relativity.